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Notes (C + +) This article has some knowledge of C + + syntax and object-oriented, involving the bottom of assembly. 1. Essential differences between programming languages Compiled language (independent of virtual machine)scripting language Compiled language (virtual machine dependent)C,C++,object-CPHP,Python,JavaScriptJava,Ruby C + + cod ...

There are four return value types: 1.1 project integration 1.1.1 create project   1.1.2 import jar package Description: in POM Add jar package file to XML file <!--mybatis Dependent package--> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis ...

catalogue 1, IO stream 1. Classification of IO streams: 2. Byte input stream Construction method of FileInputStream 3. Byte buffer stream Encryption and decoding: 4. Character stream Classification of character stream Character output stream Construction method of OutputStreamWriter Method for OutputStreamWriter to write data The di ...

Reasons for project proposal A dynamic link library is written in C + +, which contains h/.lib/.dll three files, but many users use C # to program. At this time, it is necessary to provide a dll that C # can call. There are generally two methods for C # to call dll, namely dllimport is used to encapsulate functions, but according to the relev ...

C language classic 100 questions-1 C language classic 100 questions (1-10) Topic 1: there are 1, 2, 3 and 4 numbers. How many different three digits can be formed without repeated numbers? How much is it? Program analysis: the numbers that can be filled in hundreds, tens and single digits are 1, 2, 3 and 4. After forming all permutati ...

Fill in the notes for a holiday. Maybe more than ten or twenty articles will be published this month. What is a string "hello world.\n" This string of characters enclosed in double quotation marks is called string literal, or string for short. The processing of characters and strings in C language is very frequent, but C language it ...

Controls the type of inversion Inversion of control (IOC) aims to provide a simpler mechanism to set the dependencies of components and manage them throughout the life cycle. Generally, control inversion can be divided into two subtypes: dependency injection (DI) and dependency lookup (DL). These subtypes can be further decomposed into the s ...

I always think of beginners in my spare time java The basics of learning, However, it seems that yesterday's basic knowledge sometimes can't remember its principle and knowledge points. So review the summary notes again. Encourage each other!!! At the same time, find the feeling of learning!!! 1, Introduction to Java   Java is betwe ...

About the intern method of String class in java Antecedents During the review, I thought I understood the meaning of the String intern method when I wrote the section of common classes in notes, which is to return the address of the String constant in the String constant pool! String s1 = new String("zs"); String s2 = s1.intern(); Syste ...

preface Recently, when I read some articles about ConcurrentHashMap, I always said: before jdk8, ConcurrentHashMap used segment lock to ensure concurrency security. The jdk8 abandons the segmented lock and ensures the concurrency security through the sycronized keyword + CAS. Although it probably means so, it doesn't feel thorough enough, so I ...